CN106872160A - One kind is without valve rod spring loaded safety valve on-line testing device - Google Patents
One kind is without valve rod spring loaded safety valve on-line testing device Download PDFInfo
- Publication number
- CN106872160A CN106872160A CN201710142891.8A CN201710142891A CN106872160A CN 106872160 A CN106872160 A CN 106872160A CN 201710142891 A CN201710142891 A CN 201710142891A CN 106872160 A CN106872160 A CN 106872160A
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- China
- Prior art keywords
- lifting arm
- oil cylinder
- safety valve
- line testing
- spring loaded
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000036316 preload Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses one kind without valve rod spring loaded safety valve on-line testing device, the pulling force sensor of lifting arm and monitoring oil cylinder including oil cylinder and oil cylinder connection to the pulling force of lifting arm, the bottom of the lifting arm is fixed with lifting arm magnetic bases, and top is provided with the lifting arm magnetic switch of control lifting arm magnetic bases.By setting the lifting arm of carrying magnetic base in a device, the method for safety valve is opened by lifting lower spring cup to carrying out on-line testing without valve rod spring loaded safety valve.In checking procedure, every time before adjustment adjusting ring, it is only necessary to which closing lifting arm and oil cylinder magnetic switch can pull down calibration equipment, alleviate labour intensity, improve online checkability.
Description
Technical field
It is online without valve rod spring loaded safety valve in particular to one kind the present invention relates to the calibration equipment technical field of safety valve
Calibration equipment.
Background technology
Safety valve is safety attachment important on pressure-bearing class special equipment, plays a part of overpressure protection, is special pressure-bearing class
Plant the guarantee of equipment safety operation.After safety valve comes into operation, because the reasons such as corrosion, material aging can cause safety valve
Opening pressure is inconsistent with setting value, is accurately worked to ensure safety valve reliable, and periodically safety valve must be verified.Peace
Full valve periodic check is divided into offline verification and on-line testing.Offline verification is will to be disassembled in safety valve slave unit, using peace
Full valve checking table is verified.Different from offline verification, safety valve on-line testing need not dismantle safety valve, can not stop in equipment
Annual Test of Safty Valves is completed under machine state.At present, each equipment manufacturer has produced different types of safety valve on-line testing
Device, but principle and structure are essentially identical, are mostly to be verified using additional force method, by fixture entrapment valve valve rod, with oil
Pump pressurization poppet stem enforced opening safety valve, verifies to safety valve set pressure.For without valve rod spring loaded safety valve,
Due to being not provided with valve rod, applicable safety valve on-line testing device cannot open such safety valve, therefore not be suitable for without valve rod bullet
The on-line testing of spring formula safety valve.
The content of the invention
Deficiency present invention aim to solve above-mentioned background technology, there is provided a kind of simple structure, satisfaction are without valve rod
The calibration equipment of spring loaded safety valve on-line testing.
In order to achieve this, designed by the present invention without valve rod spring loaded safety valve on-line testing device, it is characterised in that：
The lifting arm that is connected including oil cylinder and oil cylinder and monitoring oil cylinder to the pulling force sensor of the pulling force of lifting arm, the lifting arm
Bottom is fixed with lifting arm magnetic bases, and top is provided with the lifting arm magnetic switch of control lifting arm magnetic bases.
Specifically, the lifting arm top is provided with screw thread, the lifting arm top sequentially passes through oil cylinder and drawing from the bottom to top
Force snesor, is threaded with location nut, and the location nut bottom surface compresses with pulling force sensor.
Specifically, the pulling force sensor is connected with control system.
Preferably, the bottom of the oil cylinder is provided with oil cylinder magnetic bases, and sidepiece is provided with the magnetic of control cylinder magnetic bases
Oil cylinder magnetic switch.
The beneficial effects of the invention are as follows：By setting the lifting arm of carrying magnetic base in a device, by lifting lower spring
Seat opens the method for safety valve to carrying out on-line testing without valve rod spring loaded safety valve.In checking procedure, adjustment every time is adjusted
Before pitch circle, it is only necessary to which closing lifting arm and oil cylinder magnetic switch can pull down calibration equipment, alleviate labour intensity, improve
X -ray inspection X efficiency.
Brief description of the drawings
Fig. 1 is the calibration equipment designed by the present invention and the mounting structure schematic diagram without valve rod spring loaded safety valve；
Fig. 2 is the structural representation without valve rod spring loaded safety valve in the present invention；
Fig. 3 is the structural representation of oil cylinder in the present invention；
Fig. 4 is the structural representation of lifting arm in the present invention；
Wherein, 1-oil cylinder, 2-lifting arm, 3-pulling force sensor, 4-lifting arm magnetic bases, 5-lifting arm magnetic
Switch, 6-location nut, 7-control system, 8-oil cylinder magnetic bases, 9-oil cylinder magnetic switch, 10-lifting oil pipe connects
Head, 11-reset oil connection, 12-valve body, 13-valve pocket, 14-flap, 15-lower spring cup, 16-spring, 17-regulation
Circle, 18-fixing nut.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1-4 without valve rod spring loaded safety valve on-line testing device, the top of lifting arm 2 is provided with screw thread, lifting
The top of bar 2 sequentially passes through oil cylinder 1 and pulling force sensor 3 from the bottom to top, is threaded with location nut 6, the bottom surface of location nut 6 with
Pulling force sensor 3 is compressed.Pulling force sensor 3 is connected with control system 7.The bottom of oil cylinder 1 is provided with oil cylinder magnetic bases 8, sidepiece
It is provided with the oil cylinder magnetic switch 9 of control cylinder magnetic bases 8.The bottom of lifting arm 2 is fixed with lifting arm magnetic bases 4, top
Being provided with the oil cylinder magnetic bases 8 of lifting arm magnetic switch 5 and lifting arm magnetic bases 4 of control lifting arm magnetic bases 4 can be
Electromagnet or electromagnetic block.
The course of work of the invention is：
Step one：Lifting arm 2 is stretched into the spring 16 of safety valve to be verified, makes lifting arm magnetic bases 4 and lower spring
Seat 15 is contacted, and opens lifting arm magnetic switch 5；
Step 2：Oil cylinder 1 and pulling force sensor 3 are arranged on lifting arm 2, the specification adjustment according to safety valve to be verified
To correct position, oil cylinder magnetic bases 8 is lain in a horizontal plane in the fixing nut 18 of safety valve to be verified, location nut 6 be installed,
Open oil cylinder magnetic switch 9；
Step 3：Pulling force sensor 3 is connected with control system 7；
Step 4：Preload force is set in 7 in the controls, it is the gravity of lifting arm 2 to preload force value；
Step 5：Start control system 7 and preload force is loaded to lifting arm 2, make the pre- of the spring 16 of safety valve to be verified
Clamp force returns to the state installed before the on-line testing instrument；
Step 6：Set-pressure, sealing surface area, the medium effect pressure of safety valve to be verified are set in control system 7
The parameters such as power, the main loading force value of applying needed for calculating；
Step 7：Main loading force further is loaded to lifting arm 2, adjusting ring is adjusted to suitable according to safety valve opening
Highly, the on-line testing of safety valve is completed；
Step 8：Close lifting arm magnetic switch 5, oil cylinder magnetic switch 9 and unclamp location nut 6, remove device.
The above, is only presently preferred embodiments of the present invention, not does any formal to structure of the invention
Limitation.Every any simple modification, equivalent variations and modification made to above example according to technical spirit of the invention,
Still fall within the range of technical scheme.
Claims (4)
1. one kind is without valve rod spring loaded safety valve on-line testing device, it is characterised in that：Connected including oil cylinder (1) and oil cylinder (1)
Lifting arm (2) and monitoring oil cylinder (1) to the pulling force sensor (3) of the pulling force of lifting arm (2), the bottom of the lifting arm (2)
Lifting arm magnetic bases (4) are fixed with, top is provided with the lifting arm magnetic switch (5) of control lifting arm magnetic bases (4).
2. one kind as claimed in claim 1 is without valve rod spring loaded safety valve on-line testing device, it is characterised in that：The lifting
Bar (2) top is provided with screw thread, and lifting arm (2) top sequentially passes through oil cylinder (1) and pulling force sensor (3), spiral shell from the bottom to top
Line is connected with location nut (6), and location nut (6) bottom surface compresses with pulling force sensor (3).
3. one kind as claimed in claim 2 is without valve rod spring loaded safety valve on-line testing device, it is characterised in that：The pulling force
Sensor (3) is connected with control system (7).
4. one kind as claimed in claim 2 is without valve rod spring loaded safety valve on-line testing device, it is characterised in that：The oil cylinder
(1) bottom is provided with oil cylinder magnetic bases (8), and sidepiece is provided with the oil cylinder magnetic switch of the magnetic of control cylinder magnetic bases (8)
(9)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142891.8A CN106872160A (en) | 2017-03-10 | 2017-03-10 | One kind is without valve rod spring loaded safety valve on-line testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142891.8A CN106872160A (en) | 2017-03-10 | 2017-03-10 | One kind is without valve rod spring loaded safety valve on-line testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106872160A true CN106872160A (en) | 2017-06-20 |
Family
ID=59171922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710142891.8A Pending CN106872160A (en) | 2017-03-10 | 2017-03-10 | One kind is without valve rod spring loaded safety valve on-line testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106872160A (en) |
Citations (19)
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-
2017
- 2017-03-10 CN CN201710142891.8A patent/CN106872160A/en active Pending
Patent Citations (19)
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|---|---|---|---|---|
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| KR20090017215A (en) * | 2007-08-14 | 2009-02-18 | 주식회사 대흥이엔텍 | Safety valve testing apparatus |
| CN201417215Y (en) * | 2009-06-08 | 2010-03-03 | 北京亚力特科技开发有限公司 | On-line check meter of servo protection valve |
| CN102809449A (en) * | 2012-08-22 | 2012-12-05 | 江苏理士电池有限公司 | Test method for assembling pressure of loosely-assembled lead-acid storage battery |
| CN103091024A (en) * | 2013-01-28 | 2013-05-08 | 成都赛来科技有限公司 | Push-pull force testing device of actuator |
| CN203203792U (en) * | 2013-04-24 | 2013-09-18 | 深圳市特种设备安全检验研究院 | Online calibration device of spring-direct-loaded non-valve-stem safety valve |
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| CN206638408U (en) * | 2017-03-10 | 2017-11-14 | 武汉市锅炉压力容器检验研究所 | One kind is without valve rod spring loaded safety valve on-line testing device |
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